Golf club head

Abstract

The present application provides a golf club head with a sliding weight adjustment mechanism on the bottom, which can improve the productivity. Specifically, the sliding weight adjustment mechanism provided on the bottom has a long slot formed on the bottom, a pair of shelves formed on the opposite sides of the long slot and in the same plane with the surface of the bottom, a weight member movable along the pair of shelves and provided with a first weight part arranged on the exposed side of the shelf and a second weight part arranged on the inner side of the long slot, and a fixing member mounted on the first weight part to fix the position of the weight member during sliding. The feature is that a wall part is formed on the surface of the bottom on the face side of the weight adjustment mechanism along the long slot, and the height of the wall part is formed to be higher than the height of the weight adjustment mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to a golf club, and more particularly, to a golf club head that can adjust the weight. BACKGROUND

[0002] In the past, there has been known a configuration in which a sliding weight adjustment mechanism in which a weight member for adjusting the weight is slidably attached is provided on a wood-type golf club head (hereinafter referred to as a head). For example, in Patent Document 1 and Patent Document 2, there is disclosed a configuration in which a first shelf portion and a second shelf portion are provided in opposite relation on the back surface of the sole in the interior of a groove formed so as to extend in the toe and heel direction, and a weight assembly is provided so as to sandwich the first shelf portion and the second shelf portion. The weight assembly has a block member (weight member) that sandwiches the first shelf portion and the second shelf portion and a washer, and is configured so that the position thereof can be slid and fixed to a preferred position by a fastening screw.

[0003] PATENT DOCUMENT

[0004] Patent Document 1: Japanese Patent No. 6715870

[0005] Patent Document 2: Japanese Patent No. 6989651 SUMMARY

[0006] Since the above-described conventional weight adjustment mechanism forms the shelf portion that slides the weight member in the interior of the groove, the structure of the mold for forming the sliding mechanism becomes complicated, and there is a problem of poor productivity. On the other hand, as described above, the sliding weight adjustment mechanism is preferably configured so that the weight member is in a stable supported state and does not loosen at the time of hitting the ball, and adjustment operation can be easily performed.

[0007] The present application is an application that focuses on the above-described problem, and the technical problem to be solved is to provide a golf club head in which the productivity can be improved in a golf club head that has a sliding weight adjustment mechanism in the sole.

[0008] To achieve the above object, the golf club head sole according to the present invention has a sliding weight adjustment mechanism, and is characterized in that the weight adjustment mechanism has a long groove formed on the sole, a pair of shelves formed on both sides of the long groove in a plane with the surface of the sole, a weight member movable along the pair of shelves, and a fixing member mounted on the weight member to fix the position of the weight member when sliding, and a wall formed on the surface of the sole on the face side of the weight adjustment mechanism along the long groove, the height of the wall being higher than the height of the weight adjustment mechanism.

[0009] According to the above-mentioned club head structure, since the pair of shelves for sliding the weight member are formed on both sides of the long groove formed on the sole in a plane with the surface of the sole, the structure of the mold for forming the sliding mechanism can be simplified, and productivity can be improved. In addition, since the shelves are not formed inside the groove and are formed in a plane with the surface of the sole, the adjustment operation of the weight member can be facilitated. Furthermore, since the wall having a height higher than the height of the weight adjustment mechanism is formed on the sole along the long groove, the contact of the weight adjustment mechanism with the ground (grass) at the time of hitting the ball can be reduced, so that the weight member can be stably supported without being loosened.

[0010] In addition, the golf club head sole according to the present invention has a sliding weight adjustment mechanism, and is characterized in that the weight adjustment mechanism has a long groove formed on the sole, a pair of shelves formed on both sides of the long groove in a plane with the surface of the sole, a weight member movable along the pair of shelves, and a fixing member mounted on the weight member to fix the position of the weight member when sliding, and a notch formed on the weight member to slidably guide the weight member along the pair of shelves, the weight member being capable of being removed from the long groove by being rotated.

[0011] According to the above-mentioned club head structure, since the pair of shelves for sliding the weight member are formed on both sides of the long groove formed on the sole in a plane with the surface of the sole, the structure of the mold for forming the sliding mechanism can be simplified, and productivity can be improved. In addition, since the shelves are not formed inside the groove and are formed in a plane with the surface of the sole, the adjustment operation of the weight member can be facilitated. Furthermore, since the weight member can be removed from the long groove by being rotated, the adjustment operation of the weight member can be facilitated.

[0012] According to the present application, the productivity of a golf club head having a sliding weight adjustment mechanism in the bottom portion can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a front view showing a golf club having the golf club head of the first embodiment of the present application installed therein.

[0014] Figure 2 is a view showing the golf club head of Figure 1 from the bottom side.

[0015] Figure 3 is a sectional view of the golf club head of Figure 2 along the line A-A.

[0016] Figure 4 is a view showing the second embodiment of the golf club head, (a) is a sectional view, and (b) is a view showing the structure of the second weight member.

[0017] Figure 5 is a sectional view showing the third embodiment of the golf club head.

[0018] Figure 6 is a sectional view showing the fourth embodiment of the golf club head, (a) is a sectional view, and (b) is a sectional view showing a modification thereof.

[0019] Figure 7 is a view showing the fifth embodiment of the golf club head, (a) is a sectional view, and (b) is a plan view of the second weight member shown in (a).

[0020] Figure 8 is a view showing the sixth embodiment of the golf club head, (a) is a sectional view, and (b) is a sectional view showing a modification thereof.

[0021] Figure 9 is a mode view showing the embodiments shown in Figure 8 , (a) is a view showing a dismounting position of the weight member, and (b) is a view showing a mounting position of the weight member.

[0022] Figure 10 is a view showing the fixing state of the weight member in the embodiments shown in Figure 8 , (a) is a perspective view, and (b) is a view observed from the back side (the inside of the head).

[0023] Figure 11 is a view showing the fixing state of the weight member in the embodiments shown in Figure 10The figures shown are of a modified embodiment, (a) is a rear view of the cover member, and (b) is a view of the counterweight member viewed from the rear side (inside the rod head).

[0024] Figure 12 (a) is a diagram showing the seventh embodiment of the golf club head, and (b) is a diagram showing a variation thereof.

[0025] Symbol Explanation

[0026] 1-Golf club; 3-Golf club head; 4-Club head body; 7-Bottom; 10-Sliding weight adjustment mechanism; 11-Long slot; 12a, 12b-Shelves; 14-Weighting components; 14A-First weight section; 14B, 14D-Second weight section; 15-Fixing component; 18-Wall section; 40-Weighting for fine adjustment. Detailed Implementation

[0027] The following describes an embodiment of the golf club head (hereinafter referred to as the club head) according to the present invention.

[0028] Figure 1 A golf club with a clubhead of the first embodiment is shown. Figure 2 From the bottom side Figure 1 The diagrams shown depict the clubhead under observation. The golf club 1 shown in these diagrams represents a driver-type club with a clubhead 3 fixed to the top of the shaft 50.

[0029] The clubhead 3 has a metal clubhead body 4, which is a hollow structure and includes: a face 5 with a striking face (front); a crown 6 extending rearward from the upper edge of the face 5; a bottom 7 extending rearward from the lower edge of the face 5; and a side portion 8 connecting the edges of the crown 6 and the bottom 7. The side portion 8 has a back portion 8a opposite to the face 5 and a toe portion 8b and a heel portion 8c extending from the face 5 through the back portion 8a. Furthermore, the side portion 8 can be divided by a ridge between itself and the crown 6 and the bottom 7, or it can be divided without a ridge between itself and the bottom 7, and both can form a flat plane from the bottom (forming a flat plane from the bottom 7 which is in contact with the ground).

[0030] The club head body 4 is configured by joining a plurality of metal shell members divided at various positions to each other by welding, bonding, or the like. Each shell member can be integrally formed by casting, press forming, or the like of a metal such as titanium alloy, stainless steel, iron, aluminum alloy, magnesium alloy, or the like, and then joined by welding, bonding, brazing, screwing, or the like of the end edge regions of each member to configure the club head body 4. Alternatively, the shell members can be formed of a composite material (fiber-reinforced plastic or the like) containing reinforcing fibers such as carbon fibers and glass fibers, and then integrated by bonding or the like to configure the club head body 4, and the material and joining method of the shell members are not limited.

[0031] Further, each member (shell member) configuring the club head body 4 can be configured by integrating the side portion 8 with the bottom portion 7 or the crown portion 6, or the like, and integrally forming a plurality of members or partial components of each member in advance by casting or the like, and then joining them by welding, bonding, or the like. Further, as described above, the side portion 8 can be configured to be integrated into the same planar shape without a ridge line between the bottom portion 7, or to be integrated into the same planar shape without a ridge line between the crown portion 6.

[0032] The face portion 5 can be formed by press working, CNC machining, or forging of a metal such as titanium, titanium alloy, stainless steel, iron, or the like, and joined to the opening formed on the front side of the crown portion, the bottom portion, and the side portion by welding, laser welding, plasma welding, brazing, bonding, or the like. At this time, the face portion 5 can be formed in a plate shape and joined to the other shell members, or formed in a cup shape and joined to the front end edges of the crown portion, the side portion, and the bottom portion to configure a part thereof.

[0033] Further, on the club head body 4, a hosel portion 9 for fixing the top end of a shaft 50 is integrally formed. The hosel portion 9 protrudes upward from the crown portion 6, and the top end portion of the shaft 50 is fitted and fixed in the opening hole thereof.

[0034] A sliding weight adjustment mechanism 10 is provided on the bottom portion 7.

[0035] Hereinafter, the configuration of the sliding weight adjustment mechanism 10 will be described with reference to Figure 2 and Figure 3 The configuration of the sliding weight adjustment mechanism 10 will be described, but in the following description, up and down (upper, lower) refer to the up and down in the drawing. Therefore, the lower (lower side) shown in the drawing actually refers to the crown portion side of the club head body 4, and the upper (upper side) refers to the opposite side (ground side).

[0036] As is well known, the sliding weight adjustment mechanism 10 adjusts the weight balance (center of gravity height, center of gravity depth, center of gravity distance, and the like) of the club head body according to the swing characteristics of the user or the like by sliding and fixing the position of the weight of an arbitrary weight along the bottom.

[0037] As shown in FIG. 1, the long groove 11 of the present embodiment is formed in a circular arc shape on the back side of the bottom 7 at a prescribed interval from the ridge line 7A, and thereby can adjust the position of the weight in the toe, heel, front, and back directions. Figure 2

[0038] The weight adjustment mechanism 10 has the circular arc-shaped long groove 11 formed on the bottom 7 and a pair of shelves 12a, 12b formed on both sides (front and back sides) of the opening of the long groove 11.

[0039] The pair of shelves 12a, 12b are formed so that their exposed surfaces are in the same plane as the surface 7a of the bottom 7. Specifically, each pair of shelves 12a, 12b is formed so that it is not formed in a position that falls within the long groove 11 and is formed in the same plane as the surface 7a. In this way, since the pair of shelves 12a, 12b and the surface 7a of the bottom 7 are formed in the same plane, the mold used when the bottom is molded does not become complicated, and thus productivity can be improved.

[0040] At this time, if the mold used when the bottom is molded does not become complicated, a slight step can be formed between them, and a slightly inclined state can also be formed (these are referred to as the same plane).

[0041] The pair of shelves 12a, 12b are formed so that they extend from the front and back sides of the upper end opening of the long groove 11 toward the center of the long groove, and an opening 12A is formed between the tips in the direction of the long groove.

[0042] Furthermore, the weight adjustment mechanism 10 has a weight member 14 that can move along the pair of shelves 12a, 12b and a fixing member 15 that fixes the position when the weight member 14 is slid.

[0043] ​The counterweight member 14 of the present embodiment is formed in two parts, and includes a first counterweight part 14A provided on the exposed side of the shelf and a second counterweight part 14B provided on the inner side (inner space S) of the long groove 11. These first and second counterweight parts 14A and 14B are fixed by the fixing member 15 in a manner that sandwiches the pair of shelves 12a and 12b. The fixing member 15 of the present embodiment is formed by a screw (fixing screw) 15a, and internal thread parts 14a and 14b for screwing the screw 15a are formed on the first and second counterweight parts 14A and 14B. Thus, by aligning the first and second counterweight parts 14A and 14B and screwing the screw 15a, the first and second counterweight parts 14A and 14B can be fixed in a state of sandwiching the pair of shelves 12a and 12b, and the position of the counterweight member 14 can be fixed.

[0044] Further, by loosening the screw 15a, the first and second counterweight parts 14A and 14B can be moved away from the pair of shelves 12a and 12b in the up and down direction, and thus the counterweight member 14 can be moved along the long groove 11, and the position can be fixed again by tightening the screw 15a at a desired position.

[0045] The first and second counterweight parts 14A and 14B and the fixing member 15 can be formed of various materials having different specific gravities, such as aluminum, SUS, titanium, tungsten alloy, and the like, and these materials have a counterweight adjustment function. That is, by changing the fixed position and weight of the long groove 11, the center of gravity balance can be adjusted.

[0046] Although the shape of the first and second counterweight parts 14A and 14B is not particularly limited, it is preferable that the shape facilitate the adjustment work. For example, the first counterweight part 14A is preferably formed in a shape (for example, a circular shape having a diameter larger than the length of the opening 12A) that is longer than the length of the opening 12A between the top ends of the pair of shelves 12a and 12b, so that it does not fall into the long groove 11 during the operation. Further, for the second counterweight part 14B, it is preferable that the shape facilitate insertion into and removal from the long groove 11. For example, by forming a rectangular shape having a longer length of the long side than the length of the opening 12A and a shorter length of the short side than the length of the opening 12A, the insertion and removal operations from the long groove 11 can be facilitated.

[0047] It is preferable that a wall part 18 be formed on the surface of the face side bottom 7 along the long groove 11 with respect to the counterweight adjustment mechanism 10. This wall part 18 can function to suppress contact of the counterweight adjustment mechanism 10 with the ground (grass) and to suppress relaxation, loosening, damage, and the like of the counterweight adjustment mechanism 10 during a swing of the golf club, and it is preferable that the height H be formed to be equal to or higher than the maximum height (projecting height HI from the bottom) of the counterweight adjustment mechanism 10.

[0048] In addition, the position and shape of the wall portion 18 can be appropriately modified in design, etc. as long as the above-described functions are exhibited. For example, the wall portion 18 can be shaped so as to stand on the face side of the weight adjustment mechanism 10 and directly connect to the lower edge of the face 5, or can be appropriately modified so as to form a raised state, etc. on the face side in the toe and heel directions within a prescribed range. Alternatively, the wall portion 18 can be shaped so that the raised surface formed by the wall portion 18 becomes higher as it gradually transitions to the face, and the maximum height thereof becomes equal to or greater than the maximum height (projecting height Hl from the bottom) of the weight adjustment mechanism 10.

[0049] According to the above-described club head structure, the weight of the weight member 14 can be changed by operating the fixing member 15 of the weight adjustment mechanism 10, or the fixed position thereof can be slid to adjust, whereby the weight balance (center of gravity height, center of gravity depth, center of gravity distance, etc.) of the club head body 4 can be adjusted according to the swing characteristics of the user, etc.

[0050] Further, since the pair of shelves 12a, 12b that slide the weight member 14 and the surface of the bottom 7 are formed as the same plane (substantially the same plane), the structure of the mold for forming the sliding mechanism can be simplified, and the productivity of the club head body can be improved. Further, since the pair of shelves 12a, 12b are formed on the opening portion of the long groove 11, the operation of the weight member can be facilitated. Moreover, since the wall portion 18 is formed on the face side of the long groove 11, the relaxation, loosening, damage, etc. of the weight adjustment mechanism 10 can be suppressed, and the stabilization of the support (fixation) state of the weight member 14 can be achieved.

[0051] Next, another embodiment of the golf club head according to the present application will be described.

[0052] In addition, in the embodiments described below, the same reference numerals are used to designate the same configurations as those of the above-described embodiments, and detailed descriptions thereof will be omitted.

[0053] Figure 4 is a view showing the second embodiment, (a) is a cross-sectional view identical to Figure 3 (b) is a view showing the structure of the second weight portion.

[0054] In this embodiment, the first weight portion 14A and the second weight portion 14B are disposed so as to sandwich the pair of shelves 12a, 12b, respectively, and on the opposite faces of the first weight portion 14A and the second weight portion 14B, concave-convex portions that fit into each other when the weight member 14 is fixed are formed.

[0055] The concave-convex portion of the present embodiment is constituted by a concave portion 14e formed on the back surface of the first counterweight portion 14A and a convex portion 14f formed on the surface of the second counterweight portion 14B. The concave portion 14e and the convex portion 14f are configured to be fitted in a state where the first counterweight portion 14A and the second counterweight portion 14B sandwich the pair of shelves 12a, 12b, by fastening the fixing member 15, i.e., the screw 15a.

[0056] In addition, although the position, size (depth), number of formation, etc. of the concave-convex portion are not particularly limited, in the present embodiment, as shown in (b) of FIG. 6, the concave-convex portion is provided on the symmetrical positions (on the symmetrical positions at equal distances from the center position of the screw 15a, etc.) on both sides of the fixing member 15 (screw 15a). Figure 4 (b) shown is provided on the symmetrical positions (on the symmetrical positions at equal distances from the center position of the screw 15a, etc.) on both sides of the fixing member 15 (screw 15a).

[0057] According to such a configuration, loosening of the first counterweight portion 14A and the second counterweight portion 14B sandwiching the pair of shelves 12a, 12b is less likely to occur at the time of fixing the counterweight member, and thus the fastening state is stable. In particular, since a plurality of (two in the figure) are provided on both sides of the screw 15a in a symmetrical manner, loosening, etc. can be effectively suppressed.

[0058] Figure 5 is a cross-sectional view showing the third embodiment.

[0059] In the present embodiment, a convex portion 14f is formed on the back surface of the first counterweight portion 14A, and a concave portion 14e for fitting the convex portion 14f is formed on the surface of the second counterweight portion 14B. The convex portion 14f is formed in a shape larger than the cross-sectional area of the screw in the area of the fixing member 15 (screw 15a), and the head portion of the screw 15a is configured to be able to be positioned below (may also be inside the convex portion 14f).

[0060] According to such a configuration, thinning of the first counterweight portion 14A can be achieved, and the head portion of the screw 15a for fixing the counterweight member 14 can be fixed to a lower position, as a result of which the protruding height Hl of the counterweight member 14 of the counterweight adjustment mechanism can be suppressed.

[0061] Figure 6 is a diagram showing the fourth embodiment, (a) is a cross-sectional view, and (b) is a cross-sectional view showing a modification thereof.

[0062] In this embodiment, on the inner face (inner face 11e on the face side and inner face 11f on the back side) that defines the inner space S of the long groove 11, a recess 20 is formed in a direction orthogonal to the sliding direction. The second counterweight portion 14B is configured to enter the recess 20, and the entered second counterweight portion 14B is configured to abut against a curved portion (step portion of the recess) 20a formed by the recess 20 when the screw 15a is fastened. Thus, the first counterweight portion 14A and the second counterweight portion 14B are in a state in which the first counterweight portion 14A abuts against the surface of the shelf 12a, 12b and the second counterweight portion 14B abuts against the curved portion 20a, as indicated by the arrows of the figure, when the screw 15a is fastened, thereby fixing the counterweight member 14.

[0063] According to such a configuration, since the gap S1 is generated between the first counterweight portion 14A and the second counterweight portion 14B, as shown in the modification example of (b), it is easy to form the protruding portion 14f that protrudes into the long groove (into the gap S1). That is, by forming the protruding portion 14f, it is possible to easily suppress the protruding height H1 of the adjustment mechanism 10. Further, since the sliding mechanism portion can be dealt with by a mold, and it is also possible to not add processing of the recess 20, it is possible to achieve improvement of productivity and reduction of cost.

[0064] Further, since the first counterweight portion 14A and the second counterweight portion 14B do not sandwich the pair of shelves 12a, 12b in the up-down direction, and the pressing position (arrow in the lower direction) of the first counterweight portion 14A with respect to the shelf 12a, 12b and the pressing position (arrow in the upper direction) of the second counterweight portion 14B with respect to the curved portion 20a are in a state of misalignment (offset state), the fixing state of the counterweight member 14 is stable, and loosening and the like are not easily generated.

[0065] Figure 7 is a view showing the fifth embodiment, (a) is a sectional view, and (b) is a plan view of the second counterweight portion shown in (a).

[0066] The second counterweight portion 14D of the present embodiment has sliding portions 24a, 24b that can approach / withdraw from the inner faces 11e, 11f of the long groove 11 by a rotational operation of the fixing member 15 (screw 15a). On the surface of the central side of each sliding portion 24a, 24b, a taper 24a1, 24b1 that is reduced in diameter as it transitions downward is formed. Further, the second counterweight portion 14D has a pressing portion 24c between each sliding portion 24a, 24b, and on the surface of the pressing portion 24c, a taper 24c1 that is reduced in diameter as it transitions downward is formed. The taper 24c1 is different in taper rate from the tapers 24a1, 24b1 of the sliding portions 24a, 24b, and the tapers are formed in such a manner that when the pressing portion 24c moves downward, each sliding portion 24a, 24b is caused to approach (press contact) the inner faces 11e, 11f of the long groove 11 as indicated by the arrow in the drawing.

[0067] The sliding portions 24a, 24b and the pressing portion 24c are housed in the upper and lower plates 25a, 25b that are provided in the groove 11, and the second counterweight portion 14D and the upper and lower plates 25a, 25b are configured so as to be able to slide integrally in the long groove.

[0068] As with the above-described embodiment, the fixing member 15 (screw 15a) is screwed into the first counterweight portion 14A, and the fixing member 15 penetrates the screw holes (in Figure 7 (b) that are provided in the pressing portion 24c. Further, between the upper plate 25a and the pair of shelves 12a, 12b, a washer 26 is interposed.

[0069] According to such a configuration, when the fixing member 15 is fastened, the first counterweight portion 14A and the second counterweight portion 14D sandwich the pair of shelves 12a, 12b, and the pressing portion 24c moves in the downward direction, so as indicated by the arrow, each sliding portion 24a, 24b of the second counterweight portion 14D is press contacted to the inner faces 11e, 11f of the long groove 11 by the engagement of the above-described tapers, and further, the position of the counterweight member 14 is fixed. At this time, when the fixing member 15 is loosened, the sandwiching of the first counterweight portion 14A and the second counterweight portion 14D by the pair of shelves 12a, 12b is released, and each sliding portion 24a, 24b of the second counterweight portion 14D can withdraw from the inner faces 11e, 11f of the long groove 11, so as to release the fixed state of the counterweight member 14.

[0070] Thus, since the counterweight member 14 is fixed in such a manner as to sandwich the pair of shelves 12a, 12b in the upward and downward direction, and each sliding portion 24a, 24b of the second counterweight portion 14D is press contacted to the inner faces of the long groove, so as to become in a state of being fixed in the front and back direction, the stabilization of the fixed state can be achieved.

[0071] Figures 8 to 10 is a view showing the 6th embodiment, Figure 8 (a) is a sectional view, Figure 8 (b) is a sectional view showing a modification thereof, Figure 9 is a view showing Figure 8 a mode diagram of the embodiment shown in Figure 9 (a) is a view showing a dismounting position of the weight member, Figure 9 (b) is a view showing a mounting position of the weight member, and thereafter, Figure 10 is a view showing a fixed state of the weight member in Figure 8 the embodiment shown in Figure 10 (a) is a perspective view, Figure 10 (b) is a view as seen from the back side (the inside of the head of the rod).

[0072] Unlike the above-described embodiments, the weight member 14 of this embodiment is configured to integrally form the 1st weight portion 14A and the 2nd weight portion 14B (for convenience, the portion exposed upward from the pair of shelves 12a, 12b is taken as the 1st weight portion 14A, and the portion located inside the long groove 11 is taken as the 2nd weight portion 14B). The weight member 14 is formed in a substantially rectangular parallelepiped shape, and a cutout 14H is formed at both short side sides thereof so as to slidably guide the weight member 14 along the pair of shelves 12a, 12b.

[0073] Like the foregoing embodiments, the weight member 14 is configured to be able to release the fixed state and slide inside the long groove 11 by performing a rotation operation in a manner to loosen the fixing member 15 (screw 15a), and to be able to fix the position thereof by performing a rotation operation in a manner to tighten the fixing member 15.

[0074] Further, the fixing member 15 of this embodiment is configured to have a substantially rectangular shaped cover member 15b covering the 1st weight portion 14A, and the screw 15a is screwed in the central region of the cover member 15b. A screw hole 15c is formed in the central region of the cover member 15b, and the tip of the sag of the periphery of the cover member 15b comes into abutment with the surface region of the periphery of the pair of shelves 12a, 12b when the cover member 15b is tightened with the screw 15a, thereby being able to fix the weight member 14 (see Figure 8 (a), Figure 10 (a)). By providing such a cover member 15b, it is possible to make it difficult for foreign matter to enter inside the long groove, and to improve the appearance.

[0075] At this time, it is also possible to use the Figure 4 , Figure 5The configuration is the same as shown, and a concave-convex portion is formed on the first weight portion 14A and the cover member 15b. For example, as shown in Figure 8 (b), a convex portion 15f is formed in the region of the back surface of the cover member 15b where the screw 15a is provided, and a concave portion 14g is formed in advance on the surface of the first weight portion 14A, and by fastening the fixing member 15, that is, the screw 15a, the two can be brought into a fitting state.

[0076] According to such a configuration, stabilization of the fastened state (fixed state) and prevention of loosening can be achieved, and the protrusion height of the head of the screw 15a can be reduced, and improvement of the appearance can be achieved while reducing the resistance at the time of hitting.

[0077] Further, as shown in Figure 9 The weight member 14 is formed in a substantially rectangular parallelepiped shape, and the short side is formed to be shorter than the opening 12A between the respective top ends of the pair of shelves 12a, 12b (see Figure 9 (a)). Further, the long side is formed to be longer than the opening 12A (see Figure 9 (b)).

[0078] According to such a weight member 14, as shown in Figure 9 (a), (b), by rotating the weight member 14, the guide relationship of the pair of shelves 12a, 12b and the cutout 14H can be released, and the integrated weight member 14 can be easily removed from or inserted into the long groove 11.

[0079] The weight member 14 in the present embodiment is characterized by the attachment and detachment structure with respect to the long groove 11, and for the shape of the weight member 14, as long as it can be attached and detached by the rotation operation as described above, appropriate deformation can be made. Therefore, although in the configuration shown in the drawings, a wall portion 18 is formed on the surface of the bottom 7 on the face side along the long groove 11, a configuration in which such a wall portion 18 is not formed can also be made. Further, for the weight member 14, instead of being formed integrally, the same structure as in the above-described embodiment can be made, in which the first weight portion 14A and the second weight portion 14B are divided.

[0080] As shown in Figure 11 (a), (b), it is preferable that a fixing portion (in the drawings, constituted by a pair of ribs 15g) be formed in advance on the back surface of the cover member 15b so as to be fitted into the weight member 14 (the surface of the first weight portion 14A).

[0081] By forming such a fixing portion (rib 15g) in advance, the fixing operation of the cover member 15b with respect to the weight member 14 can be facilitated.

[0082] Figure 12 (a) is a view showing the seventh embodiment, Figure 12(b) is a view showing a modification thereof.

[0083] In the above-described configuration of each embodiment, a weight for fine adjustment can be attached to and detached from the weight member 14 (the first weight portion 14A and / or the second weight portion 14B). For example, Figure 12 (a), in Figure 3 In the embodiment shown in FIG. 10, a recess 14h for the weight 40 for fine adjustment is formed on the surface of the first weight portion 14A. The weight 40 for fine adjustment can be configured by a screwing structure between the recess 14h, and various specific gravity members such as aluminum, SUS, titanium, tungsten alloy, and the like can be used.

[0084] According to such a configuration, by attaching and detaching the weight 40, the weight balance can be finely adjusted more finely, and the weight balance can be adjusted even without detaching the weight member 14 from the long groove 11.

[0085] Further, for the weight 40 for fine adjustment (the recess 14h), a plurality of the weights are preferably provided in advance around the fixing member, i.e., the screw 15a, and are preferably provided at positions symmetrical with respect to the center of the screw 15a. According to such a configuration, by rotating and fixing the first weight portion 14A, the fine adjustment of the weight in the toe direction, the heel direction, and the front direction, the back direction can be facilitated.

[0086] Further, the weight 40 for fine adjustment can be configured to be attachable to and detachable from the second weight portion 14B. For example, in Figure 4 (a), the protrusion 14f formed on the surface of the second weight portion 14B can be configured as the weight for fine adjustment. Further, in the present embodiment, as described above, the long groove 11 is formed in an arc shape with a predetermined interval from the ridge line 7A, and thus, as shown in Figure 12 (b), the shape of the first weight portion 14A can be formed in an arc shape in advance in accordance with such a shape. In this way, by making the shape of the long groove 11 substantially coincide with the shape of the exposed portion (the first weight portion 14A), the gap can be reduced, and the improvement of the sliding operability and the improvement of the appearance can be achieved.

[0087] Although the embodiments of the present application have been described above, the present application is not limited to the above-described embodiments, and various modifications can be made.

[0088] For example, the shape of the weight member 14 can be appropriately modified, and various modifications can be made to the structure or the arrangement position of the fixing member 15, and the like. In this case, the screw 15a constituting the fixing member can be appropriately modified in the method of the rotational operation, and for the head portion thereof, can be protruded from the first weight portion 14A or can be buried inside.

[0089] Further, the long groove 11 can also be linearly extended in the toe and heel directions, or linearly or curvedly extended in the front and back directions, and can also be formed in a ring shape. Further, the both end portions of the long groove 11 can be either open or closed. Further, the shelf 12a, 12b formed in the opening area of the long groove can also be formed with different configurations in the projection amount, wall thickness, and the like.

[0090] Further, the present application can also be a wood-type golf club (fairway wood, utility) that does not hit the ball, and the wall portion 18 can also be formed in a configuration that is not formed, and can also be formed in a configuration that is lower than the height of the weight adjustment mechanism 10. Further, in the above-described embodiments, the configuration elements of each embodiment can also be applied to other embodiments.

Claims

1. A golf club head having a sliding weight adjustment mechanism in a sole portion, characterized by comprising: a long groove formed in the sole portion; a pair of shelves formed in opposite sides of the long groove in a plane with a surface of the sole portion; a weight member movable along the pair of shelves, having a first weight portion provided on an exposed side of the shelves and a second weight portion provided on an inner side of the long groove; and a fixing member mounted on the first weight portion to fix a position of the weight member when the weight member is sliding.

2. The golf club head according to claim 1, characterized in that the fixing member has a screw to fasten and fix the first and second weight portions, and a plurality of fine adjustment weights are provided around the screw.

3. The golf club head according to claim 1, characterized in that a recess is formed in an inner surface of the long groove in a direction orthogonal to a sliding direction, and the first and second weight portions are respectively abutted and fixed to a surface of the shelves and a curved portion formed by the recess.

4. The golf club head according to claim 1, characterized in that the second weight portion has a sliding portion approaching and departing from an inner surface of the long groove by an operation of the fixing member, and a position of the weight member is fixed by a press contact of the sliding portion with the inner surface of the long groove.

5. The golf club head according to claim 1, characterized in that the weight member is configured to integrally form the first and second weight portions, a cutout is formed in the weight member to slidably guide the weight member along the pair of shelves, and the weight member is detached from the long groove by rotating to release a guiding relationship of the pair of shelves with the cutout.

6. The golf club head according to claim 5, characterized in that the fixing member has a cover member covering the first weight portion and a screw inserted into the cover member, and the cover member is abutted to a surface area around the shelves to fix the weight member when the cover member is fastened by the screw.

7. A golf club head having a sliding weight adjustment mechanism in a sole portion, characterized by comprising: a long groove formed in the sole portion; a pair of shelves formed in opposite sides of the long groove in a plane with a surface of the sole portion; a weight member movable along the pair of shelves; and a fixing member mounted on the weight member to fix a position of the weight member when the weight member is sliding. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ On the weight member, a cutout is formed which slidably guides the weight member along the pair of shelves, The weight member is released from the guiding relationship with the shelves and the cutout by being rotated, and is removed from the long groove.

8. The golf club head of claim 7, wherein, The fixing member is provided with a cover member which covers the weight member and a screw which is inserted into the cover member, When the cover member is fastened with the screw, the cover member is brought into abutment with the surface area around the shelves to fix the weight member.

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